Hello,
The categories have a category_namekey field, right ?
The screenshots you gave do not explain what you're trying to import and I can't even tell you what is wrong with your content.
For sure what you have entered for the two highlighted cells is not correct since it's not what I told you to do.
I think you should start to have a working CSV to import categories and then you will be able to apply the modification that I'm telling you to do since my very first message.
To create a vendor category, just import a category with the namekey "vendor_XX" where XX is the ID of the vendor.
Please note that category namekey is unique. So you can't have two categories with the same key.
Afterwards, if you have issues with the import of categories in HikaShop ; please open a thread in the HikaShop section of the forum.
For what's related to HikaMarket and how a category is considered as a "vendor categories" ; it's what I told you.
Regards,